期刊
MATERIALS LETTERS
卷 174, 期 -, 页码 167-170出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2016.03.121
关键词
AlN; Microcrystals; Hexagonal bipyramids
资金
- National Youth Natural Science Foundation of China [51302284, 6140031038]
Wurtzite-structured aluminum nitride (AlN) hexagonal bipyramids were prepared via a carbothermal reduction nitridation method using alumina and carbon as the raw materials. The growth of the AlN hexagonal bipyramids is dominated by the vapor-solid (VS) mechanism with Fe2O3, SiO2 and Na2O acting as mineralizers under alternate gas pressures. The preferred growth direction of the AlN hexagonal bipyramids is [0001]. Photoluminescence spectra of the AlN hexagonal bipyramids showed near-band edge emission at 512 nm at room temperature. The AlN hexagonal bipyramids might be useful for optical micro-devices. (C) 2016 Elsevier B.V. All rights reserved.
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